276 
LEPIDOPTERA. 
in the genus Polyommatus^ and they usually live on trees. 
One of our largest kinds is the Falacer butterfly (^Thecla 
Falacer of Godart). Its wings expand from inch to 
inch, are dark brown on the upper side, with two slender 
tails, one of which is very short, on each of the hind 
wings ; and on the hind margin of the same wings is an 
orange-colored spot, larger and more conspicuous in the 
females than in the other sex; the under side of the wings 
is lighter brown ; and on each wing near the middle is a 
dark-brown spot margined within and without with Avhite, 
and beyond the middle there are two rows of spots of the 
same color, bordered on one side only with whitebesides 
these spots, there are on the hind wings near the margin three 
or four orange-colored crescents, the inner one of which is 
separated from the others by a large blue spot. This insect 
is found among bushes in July and August. The caterpil-< 
lar is said to live upon various kinds of hawthorns. 
The streaked Theda QTliecla strigosa) has a long and a 
short tail on each of the hind wings, and is of a dark-brown 
color without spots on the upper side; the wings beneath are 
ornamented with wavy transverse white streaks, and near 
the hind margin of the posterior wings is a row of deep 
orange-colored crescents, with a large blue spot near the 
hindmost ande. It measures one inch and one tenth across 
O 
the wino-s. I took it on Blue Hill on the 1st of Auo:ust. In 
the markings of the under side of the wings it nearly resem¬ 
bles Theda Liparops. 
The heads of the common hop are frequently eaten by the 
little green and downy caterpillars of a very pretty butterfly, 
which has been mistaken for the Theda Favonius^ figured 
in Mr. Abbot’s “ Natural History of the Insects of Georgia”; 
but it differs from it in so many respects, that I do not 
hesitate to give it another name, and will therefore call it 
the hop-vine Theda, Hurmdi'^ ^ (Plate IV. Fig. 3). 
[7 T. Ilumuli is the T. melinus of Hiibner. — Morris.] 
M. Boisduval has figured and described this species under the name of Theda- 
Fnvonius, in his “Histoire des L^pidopteres de I’Am^rique Septentrionale.” 
